High-tension-switch mechanism



Oct. 26 192,6..

B. W. KERR HIGH TENSION SWITCH MECHANISM Patented ct. 26, 1.926.

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BE;-`.'.`A.IIIN W. KEER, OF GREENSBURG', PENNSYLVANIA, ASSIGNOR TO RAILWAY AND 'LNDUSTRIAL ENGINEERING COIHPANY, 0F GREENSB'URG, PENNSYLVANIA.. A

POB'ATIGN 0F PENNSYLVANIA.

HIGH-TENSION-SWITCH MECHANISM.

Application led January This invention relates to high-tensionV switches of the type used on transmission lines and exposed to atmospheric conditions.

Difficulties are sometimes encountered in connection with switches exposed to the ettects ot ice formed during sleet storms, causing a clogging of some of the moving contact-making parts. It is usually at such times that the necessity of isolating sections of the transmission line arises, requiring opening ot switches. Cloggingot' the contact-makingparts then causes considerable delay and inconvenience.

It is the object of the invention to provide switch mechanism of the type referred to in which the ditliculties mentioned are avoided.

For a full description ot the invention reference is made to the accompanying drawings in which- Fig. 1 is a side elevation of switch mechanism embodying the invention;

Fig. 2 is a plan View thereof; and

Fig. 3 is a section on line 3-3, Fig. l.

In the drawings 10 represents a switch` arm hinged on a post 11 to which one section ot the line is connected. At its free end arm 10 carries a housing 12 containing jaws 13 preferably supported by springs 14;. The housing 12 forms a conductive part ot the switch mechanism.

The jaws 13 are normally in contact relation with a stationary vertical blade 15 to which the other section of the line is connected.

The housing 12 is pivotally connected at the end ot arm 10 and connected by a parallel-motion link 16 to lug 11a extending upwardly at an angle trom post 11.

The operation is obvious. lWhen the arm 10 is angularly turned from the full line p0- sition to the dotted line position in F ig. 1, to open thc switch, the housing 12 is maintained in vertical position by the parallel-motion link 16 with the result that the contact mechanism within the housing is at all times protected against the weather.

While I prefer a parallel-motion mechanism, i. e. a pivoted link disposed parallel to 14, 1926.- Serial No. 81,274.

the arm 19; and while such an arrangement naturally affords the best protection, there is, of course, no necessity toi using' link motion maintaining the housing in strictly vertical position. rThe essent-ial point is mecha nism for maintaining the housing in positions which ati'ord substantially protection ot the mechanism enclosed.

The link 16 may be made ot copper or other metal having high conductivity and thus form practically a part ot the switch mechanism proper.

The switch, like all high tension switches, is in practice mounted on insulators, as is well understood- However, the support and the switch operating means Jform no part ot the invention, and have been omitted from the drawings.

The switch mechanism illustrated shows the application of spring-actuated jaws. While I preferably use jaws of this type, the invention may ot course be carried out with other forms ot contact-making and breaking elements.

I claim:

l. In a switch mechanism, the combination of switch blade pivotally mounted at one end and carrying a Contact movable with respect to the blade at the other end, a second contact tor cooperation therewith, a housing movably mounted on the switch blade, and means operative in all angular positions of Vthe'switch arm tor maintaining the housing in position to protect. the movable contact, said means including alink parallel to the blade in all posit-ions thereof.

2. In a switch mechanism, the combination ot a switch blade pivotally mounted at one end and carrying a Contact movable with respect to the blade at the other end, a second Contact for cooperation therewith, a housing movably mounted on the switch blade, and means operative in all angular positions of the switch arm for maintaining the housing in position to protect the movable contact, said means including a link parallel to the switch blade in all positions thereof, an integral lug on the pivotal support for the switch blade, and means to pv- 4blade and operating arm to eomplete a four otally'connect the link and the lug. element parallel-motion linkage, whereby the 3. In a switch mechanism, a support, a housing remains in vertioalpostion in all switch blade and an ,operating arm pivoted positions of the said blade.

5 to'sad support, a Contact at the outer end of In testimony whereof, I affix my signasaicl blade, and a housing enclosing said ture. Y Contact, said housing being pivoted to said BENJAMIN W. KEER. 

